diff --git a/VoldNativeService.h b/VoldNativeService.h
index 37a988b..12a93f5 100644
--- a/VoldNativeService.h
+++ b/VoldNativeService.h
@@ -38,7 +38,7 @@
     binder::Status shutdown();
     binder::Status abortFuse();
 
-    binder::Status onUserAdded(int32_t userId, int32_t userSerial);
+    binder::Status onUserAdded(int32_t userId, int32_t userSerial, int32_t sharesStorageWithUserId);
     binder::Status onUserRemoved(int32_t userId);
     binder::Status onUserStarted(int32_t userId);
     binder::Status onUserStopped(int32_t userId);